... Pulse, Video and AlternateAutomatic Waveform Measurements27Frequency Counter6 digits frequency counterPortsUSB HostMathematicsAdd, Subtract, Multiply, Divide, FFTInterfaceColour ... (1% + 5 digits)AC Voltage(45Hz ~ 400Hz)600mV, 6V, 60V, 600V, 700V:± (1.2% + 5 digits), Frequency: <200Hz± (1.5 ... digits), Frequency: ≥200HzDC Current6mA, 60mA, 600mA: ± (1.2% + 5 digits)6A: ± (1.5% + 5 digits)AC Current(45Hz ...